Dispensing pump



July 11, 1933. B. J. PEPPER 1,918,193

DISPENSING PUMP Filed March 17, 1933 2 Sheets-Sheet l Fig-44 35INVENTOR.

y 1933- B. J. PEPPER 1,918,193

DISPENSING PUMP 2 Sheets-Sheet 2 Filed March 17, 1933 Q7 W INVENTOR.

BY M ATTORNEY.

Patented July 11, 1933 BYRON J'. PEPPER, OF FORT WAYNE, INDIANA,ASSIGNOR TO TOKHEIM OIL TAN K AND PUMP COMYANY, 0F FORT "WAYNE, INDIANA,A CORPORATION OF INDIANA DISPENSING PUMP Application filed March 17,1933. Serial No. 661,297.

This invention relates to improvements in dispensing pumps of that classused for deliveringliquid from a storage tank in various predetermineddefinite quantities, and in which is provided adjustable mechanism forlimiting the discharge stroke of the pump at various stages to therebyregulate accordingly the quantity of liquid delivered upon eachoperation'of the pump.

An object of the invention is to provide a compact measuring pump unitof simple construction and of economical manufacture, having adjustablestop mechanism for the pump which is readily operated and the stops forwhich are sealed to prevent unauthorized re-adjustment thereof.

Other objects and advantages of the invention will appear in thefollowing description. l

An illustrative embodiment of the invention is shown in the accompanyingdrawings, in which Fig. 1 is a side elevation of a measuring pump unitin a preferred form of this invention 'Fig. 2 is a side elevation of theadjustable engaging member for the'stop mechanism of the pump unit;

Fig. 3 is a top plan view projected from Fig. 2;

Fig. 4 is a detail top plan view of an indicating collar for theengaging member;

5 is a side elevation projected from Fig. 4;

Figs. 6 and 7 are similar detail views showing a vertical section of theadjustable stop mechanism and rack bar for the pump, shown' respectivelyin different positions; and

Figs. 8 and 9 are similar top plan views projected respectively fromFigs. 6 and 7, the sealing cover being in section.

The illustrative embodiment of the inven tion consists of a standard 1having a-base 2 to which is pendent-1y secured a pump cyl inder 3 by anysuitable means such as tie rods 4.' The pump cylinder 3 has a dischargepipe 5 that extends upwardly through the standard to a point spaced fromthe top thereof and is threaded at its upper endr in a head .6 and hascommunication with a passageway the head-plate that fit-s snugly againstthe sides of each adjustable stop so that turning movement of said stopsisthereby prevented. Also, a stud 17 extends upwardly from thehead-plate that has a spacer 18 thereon, and

a hollow seal cap 19 is positioned onithefltop of the head'6 throughwhich the stud projects, the cap being secured in position on the headby anut 20. The stud and the nut are perforated for the reception ofanbrdinarv sealing device 21 to prevent unauthorized removal of' the nutand 'thie c'ap 19 to gain access to the adjustable stopsrf The bottom ofthe head 6 has a circular opening 22 therein, and the standardi has asimilar circular openin-g23 in its top that is alined with the opening22in the head. In

said openings is disposed a hollow tubular" engaging member 24that hasaxial and rotative movement therein. The engaging member has at itsupper end vertically projecting lugs 25 and 26 located thereon so as tobe alined severally with the adjusting screws 14 and 15; or 'both'out ofalineihent therewith, accordingly as the engaging member is adjust-ablyturned upon its axis. A handle 27' is provided for the engaging memberthat extends outwardly therefrom so that said men'iber may beconveniently manipulated. Within the engaging. member are providedspaced l ugs 28 and 29 which are engageable severally with the upper enda rack bar 30 (hereinafter mentioned) or non-engage able therew'thaccordingly as the engaging member is adj ustably turned. The rack bar30 is alined with the adjustable stop 13 and has vertical movement inthe engaging mem- 36, which limits the downward axial move- :nent of theengaging member by having contact withtheitop of the standard 1. 'Iheeaternal face of the collar 35 has thereon indicia 37, such for example:1 Qt, GaL, 1 GaL, or

other suitable indicating means that is operatively related with apointer 38 located on the standard, so that the various positions ofangular adjustment of the engaging member is visually determinable.

In the upper end of the engaging member is disposed a spring-pressed pin39 that bears upwardly against the bottom face of the head plate 11 inwhich are made a series of radially disposed grooves 40, 41 and 42 intowhich said pin extends severally according to the angular adjustment ofthe engaging member, whereby said member is frictionally held in therespective positions to which it is adjusted. The stop contacting lugs25 and 26 and the rack bar engaging lugs 28 and 29 are arrangedrelatively with respect to each other on the adjustable contactingmember so as to be posed operably or inoperably at different points ofadjustment of the contacting member. Thus, when the handle 27 is turnedto the position shown in Fig. 8 the lugs 25 and 26 are out of alinementwith the adjustable stops 14 and 15 and the lugs 28 and 29 are out ofalinement with the rack bar, so that upon operation of the pump the rackbar 3 is unobstructed until its upward movement is limited by havingcontact with the adjustable stop 13, thereby permitting normal fullstroke of the pump and consequent discharge of one gallon of liquid;when the handle 27 is turned to the position shown in Fig. 9 the lug 25is alined with the adjustable stop 14 and the stop 29 is also alinedwith the rack bar so that the rack bar when raised encounters the lug 29causing upward movement of the engaging member which is limited bycontact of the lug 2'5 with the adjustable stop 14 whereupon movement ofthe pump is arrested when one-half gallon of liquid has been delivered;and when the handle is moved to that position when the pin 39 iscentered in the groove 42, the lug 26 is then alined with the adjustablestop 15 and the lug 28 is also alined with the rack bar, so that therack bar when raised encounters the lug 28 causing upward movement ofthe engaging member 24 which is limited by contact of the lug 26 withthe adjustable stop 15 whereupon movement of the pump is arrested whenone quart of liquid has been delivered. I11 this manner by adjustment ofthe stops and manipulating the contacting member the length of thestroke of the pump when operated is accordingly varied and the quantityof liquid discharged through the nozzle is correspondinglyproportionate.

Preparatory to placing the pump unit in service, preferably at the placeof manufacture, the stops 13, 14 and 15 are adjusted respectively tolimit the discharge stroke of the pump at the proper points so thatcorresponding quantities of liquid will be discharged upon operation ofthe pump. After the stops have been so adjusted, the angleplate 16 issecured on the plate 11 against the sides of the stops to preventturning thereof, and the cap 19 and the nut 20 are then secured in placeto conceal the stops. T he sealing device 21 is then applied through theaperture in the nut and the stud to prevent removal of the cap.

The pump unit is then installed and connected with a liquid supply inthe usual man ner.

In use, the contacting member is adjustably rotated upon its axis bymanipulating the handle 27 so that the pin 39 enters one or the other ofthe grooves 40, 41 or 42 according to the quantity of liquid it isdesired to dispense. The pump isthen operated by manipulating its crankin the usual manner. I Vhen the contacting member is thus adjusted thequantity of such discharge is ascertained by observation of the indiciaon the collar and upon each operation of the pump the quantity of liquiddelivered thereby is definitely indicated.

A feature of the invention is the arrangement whereby the projectingstop lugs 25 and 26 on the engaging member are concealed within the head6 and the lugs 28 and 29 and the rack bar are concealed within theengaging member so as to be inaccessible from the exterior of theapparatus. Thus, tampering by inserting obstructions between the lugs 25and 26 and their respective adjustable stops or between the rack bar andthe lugs 28 or 29, which would cause premature limitations in the strokeof the pump and consequent short measurement upon operation of the pump,is circumvented.

I claim:

1. In a liquid dispenser, a standard having an opening in its top, apumpingmechanism connected with the standard, and having an operatingrack bar extending through said opening and provided with actuatingmeans therefor, a discharge pipe for said pumping mechanism projectingupwardly from said standard, a head supported at a point spaced abovesaid standard and having an opening in its bottom alined with theopening in said standard, and having a passageway communicating withsaid pipe, a spout extending from said head communieating with said pipethrough said passageway, a tubular engaging member mounted to have axialand rotative movement in the openings in said standard and head providedat its top with upwardly projecting spaced lugs and also spaced lugs inits interior, sald member enclosing said rack bar, a series ofadjustable stops supported in said head one of which is alined with saidrack bar and the other stops being located so as to have alinementrespectively with the upwardly extending lugs severally according to theangular adjustment of said engaging member, sald vertically projectinglugs and the interior lugs being positioned relative to each other sothat when either top lug is in stop engaging position a correspondinginterior lug is alined with said rack bar, and when neither top lug isin its engaging position both interior lugs are out of alinement withsaid rack bar, and a sealing means for said stops.

2. In a liquid dispenser, a pump having a standard and discharge pipetherefor, mechanism including a rack bar for actuating the pump, a headsupported at a point spaced above said standard, a spout for said pipe,a. tubular axially and rotatively movable engaging member mounted insaid standard and head and into which said rack bar extends and havingspaced top and interior lugs, a series of adjustable stops supported insaid head one of which is alined with said rack bar and the other stopsbeing located so as to be alined respectively with said top lugsseverally according to the angular adjustment of said engaging member,said lugs being positioned relative to each other so that when eithertop lug is in stop-engaging position a corresponding interior lug isalined with said rack bar, and when neither top lug is in its engagingposition both interior lugs are out of alinement with said rack bar, aposition indicating means for said engaging member, and a sealing meansfor said stops.

3. In a liquid dispenser, a measuring pump having a standard anddischarge pipe therefor, operating means for said pump includ ing a rackbar, a head supported at a point spaced from said standard, a tubularaxially and rotatively movable engaging member mounted in said standardand said head and encompassing said rack bar, said member having spacedtop and interior lugs, a series of adjustable stops supported in saidhead, one of which is alined with said rack bar and the other stopsbeing located so as to be alined respectively with said top lugsseverally according to the angular adjustment of said member, said lugsbeing positioned relative to each other so that when either top lug isin stopengaging position a corresponding interior lug is alined withsaid rack bar, and when neither top lug is in its engaging position bothinterior lugs are out of alinement with said rack bar, and a positionindicating means for said engaging member.

4. A measuring pump having a standard and discharge pipe therefor,operating means for said pump including a rack bar, a head supported ata point spaced from said standard, a series of spaced adjustable stopssupported in said head, one of which is positioned to engage said rackbar upon completion of the normal stroke thereof, an engaging membermounted in said standard and head to have axial and rotative movement,spaced lugs on said member disposed to have engagement with said rackbar respectively at diflcrent periods in the stroke thereof or to beinoperable accordingly as said member is adjustably turned, other spacedlugs on said member each of which is disposed to have engagement with acorresponding one of said stopswhen a complemental one of saidfirstmentioned lugs is positioned for engagement with said rack bar, anda position indicating means for said member.

5. A measurin pump having operating mechanism therefor including a rackbar, a standard for said pump and mechanism, a stationary head spacedfrom said standard, a tubular engaging member mounted in connection withsaid standard and head to have axial and rotative movement and in whichsaid rack bar is longitudinally movable and concealed, adjustable meansto limit axial movement of said engaging member, means within saidmember operable to limit the discharge stroke of said rack bar relativethereto when said member is adjusted in a certain position andinoperable when adjusted in another position, and a sealed concealingmeans for said stops.

6. A measuring pump having operating mecnanism therefor including a rackbar, a standard for said pump and mechanism, a stationary head spacedfrom said standard, a tubular engaging member mounted in connection withsaid standard and head to have axial and rotative movement and in whichsaid rack bar is longitudinally movable and concealed, adjustable meansto limit axial movement of said engaging member, and means within saidmember operable to limit the discharge stroke of said rack bar relativethereto when said member is adjusted in a certain position andinoperable when adjusted in another position.

In testimony whereof I aflix my signature.

BYRON J. PEPPER.

